Finding the Fourth Proportional to 10,889.10, 16,332.03 and 3,494.21

Step by Step Solution

1. Step 1: Write the proportion equation
   10,889.10 : 16,332.03 = 3,494.21 : x
2. Step 2: Convert to fraction form
   10,889.10/16,332.03 = 3,494.21/x
3. Step 3: Cross multiply
   10,889.10x = 16,332.03 × 3,494.21
4. Step 4: Simplify right side
   10,889.10x = 57,067,460.89
5. Step 5: Solve for x
   x = 57,067,460.89/10,889.10
6. Step 6: Final answer
   x = 5,240.79